Mail: if I go through the mail and sort/file/trash it every day, it's easy to do. If I pile it up and wait days, weeks, (and honestly, sometimes months) to go through it, it's a huge job. Not to mention that it can cause other issues (such as paying bills late, etc).
Folding laundry: If I fold and put away a load of laundry as soon as it comes out of the dryer, it usually does not take very long. If I let it pile up, it becomes a bigger job. For just me alone, it doesn't take long to take care of a load from the dryer. I know for families, it is a bigger task, but it's still easier if you do it a load at a time rather than let it pile up. But believe me, I was guilty of that most of the time lol
Hanging up a jacket or putting away another piece of clothing.
Loading the dishes right into the dishwasher rather than piling them in the sink.
Do you have tasks that you tend to put off? Take a stop watch and time how long it takes you to do them right away. It can be very eye opening. Sometimes we (and by we, I mean me) tend to spend a lot more time putting something off than it would take to do it in the first place.